New technology enables the blind to see!

First off I must stress that this is still in the testing stages and will be many years before it hits the market.
Science has been experimenting with a computer chip retina. This retina consist of several very tiny solar cell that react to light. The chip sends these signals to the brain. The people (totaly blind) have reported seeing light and dark. And some have reported seeing shapes! Now these people have never seen anything and now they see something. And if they can perfect this even by 50% more site thats major!
You can find out more here: http://www.nsf.gov/od/lpa/nsf50/nsfoutreach/htm/n50_z2/pages_z3/19_pg.htm

I've heard this but remained in my mind like a tragic information . I saw it at CNN . Some of those persons that accepted that change of his life were satisfied but one old women died after a sever shock ..